Watch-case pendant



(No Model.)

D. OELARA.

WATGHGASEPENDANE No. 298,396. Patented May 13, 1884.

Daniel Ofl-[ara a. w Y

y. W y

:4. Farms. mlomnlnphor. Washington. 0. 0.

iv j i --f UNITED STATES PATENT OFFICE.

DANIEL OHARA, OF \VALTHAM, MASSACHUSETTS.

WATCH-CASE PENDANT.

SEPECIFICATION forming part of Letters Patent No. 298,396, dated May 13, 1884.

Application tiled January '23, 1884. (No model.)

10 all whom it may concern:

Be it known that I, DANIEL OHARA, or; the town of Waltham, Middlesex county, Massachusetts, have invented a new and useful Improvement in Watch-Case Pendants, of which the following is a specification. I My invention relates to an improved construction of those watch-cases which are designed to be used with stem-winding watches,

whereby the entrance of dust, moisture, and other deleterious matters is avoided.

My present improvements have particular relation to the exclusion of extraneous matters from the passage of the watch-pendant, and are represented in the accompanying drawings, in WhlGh- Figure l is a partly-sectioned front view of a pendant and its accessories embodying my invention, the parts being shown in condition for use of the winding mechanism. Fig. 2 is a front View of the same parts in the closed or normal condition.

A may represent aportion of the body commonly known as the center of a watch-case. The pendant B and the hood or crown G of the winding-stem D are similarly screw-threaded, as at b and 0, on the adjacent portions of their exterior peripheries for a nut or screw-threaded band, E, preferably knurled on its exterior periphery. In the normal condition of the parts the band E, occupying the position shown in Fig. 2, completely hides the screwthreads, and at the same time seals the joint F between said crown and pendant, so as to completely exclude dust and other extraneous matters from entrance at this part of the case.

When itis desired to use the stem-winding mechanism, the band E is for the time being screwed down wholly upon the pendant, so as to liberate the winder-stem, as shown in Fig. 1.

The operation ofwinding or ofsetting having been completed, the operator screws back the band E to the position shown in Fig. 2, so as to again hide the screw-threads, and by the same action to hermetically close the passage through the pendant into the interior of the watch.

I claim as new and of my invention- In a stem-winding-watch case, the combination of externally-screw-threaded pendant B, and external]y-screw-threaded winding-stem crown O, and the internal]y-screw-threaded band B, substantially as and for the purposes set forth.

In testimony of which invention I hereunto set my hand.

DANIEL OHARA.

Attest:

OnARLEs F. STONE, HERBERT W. GRovEs. 

